XML 52 R39.htm IDEA: XBRL DOCUMENT v3.10.0.1
Supplemental Cash Flow Information (Tables)
 9 Months Ended
Sep. 30, 2018
Supplemental Cash Flow Elements [Abstract]  
Net Changes In Components of Operating Assets and Liabilities
The following table provides information regarding the net changes in components of operating assets and liabilities.
 
 
Nine Months Ended
September 30,
 
2018
 
2017
(Increase) decrease in:
 
 
 
Accounts receivable
$
87,318

 
$
(79,938
)
Inventories
9,159

 
31,973

Deferred charges
(4,899
)
 
(293
)
Other current assets
(1,798
)
 
(2,769
)
(Decrease) increase in:
 
 
 
Accounts payable
(68,974
)
 
32,896

Accrued liabilities
6,524

 
(8,131
)
Net changes in components of operating assets and liabilities
$
27,330

 
$
(26,262
)